Med. Phys. 7, pp. 108-111 (1980)

Evaluation of edge-induced streaking artifacts in {CT} scanners

W. T. Sheridan, M. R. Keller, C. M. O'Conner, and R. A. Brooks
US National Institutes of Health
K. M. Hanson
Los Alamos National Laboratory


A phantom is presented which permits the evaluation of streaking artifacts produced in CT reconstructions by abrupt edges. Its application is demonstrated by results obtained from nine CT scanners. It is observed that even in regions where streaking is not readily apparent, edge-induced artifacts can significantly increase the variances in the reconstruction.

Keywords: streaking artifacts, phantom, scanner evaluation

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